Dumping-grate.



4 G. H. THACHEII, II.

DUMPING GRATE.

APPLICATION FILED mm2. I9I2.

Patented Nov. 2, 1915.

2 SHEETS-SHEET I.

W/VAI nl IMHLIHFHQI I |-I. |.1I II. .I I E `=m|l`= I I lNVENTOR 2 BY Vme? M ATTORNEY5,

WITNESSES CUIUMBIA PLANOURAPH 1:0.,WASHINOTDN. D.'C

G. H. THACHER, JR.

DUMPING GRATE.

APPLICATION FILED AuG.2. 1912.

Patented Nov. 2, 1915.

2 SHEETS-SHEET 2.

W INVENTU;` BY v WITNESSES:

ATTORNEY 5.

COLUMBIA PLANOGRAPH C0..WASH|NGTON, DJ?.

` at Albany,

N 'unirnn erlernte artnr orifice;

, GEORGE H. TI-IACI-IER, JR., OF" ALBANY, NEW YORK, ASSIGNOR TO GEORGEI-I.

i THACHER, SR., OF ALBANY, NEW YORK.

DUMPING-GRATE.

To all al1/Om t may concern.'

Be it known that l, Cenci-zen H. THACHER, Jr., a citizen of the UnitedStates, residing in the .county yof Albany, State of New York, havevinvented certain new and useful Improvements in Dumping- Crrates; and ldo hereby declare the follow-i ing to be a full,` clear,` and exactdescription of the invention, such as will enable others skilled in theart to which it appertains tof make and usethe same. A

The present invention relates to dumping grates for furnaces,"andmore-particularly to one of comparatively inexpensive, dura-V ble andefficient construction which may be constructed in employing the portingmembers. t 1 v One object is to provide independently removable andlikeI fuel-supporting members normally locked together in a vframe bydisengageable locking means, whereby any one of thel members maybereadily replaced. i Another object is to arrangethe fuel-supportingmembers in such manner that a continuous grate surface having throughairpassages is provided.

Another object :is to provide, operating mechanism for independentlytilting the different grate sections to dump the fuel residue supportedthereon without disturbing any of the other sections. Another object isto provide `operating mechanism and strengthening members well y grate;Fig. 2 is a sec-tion on line 2-`2 of Fig. l;

below the grate surface .in order to prevent unnecessary strain thereindue to the heat of combustion, 4and in order to maintain efficientoperation at all times.

Another object is to so connect the oper-` ating mechanism that thedumping sections tend to keeptheir normal horizontal Vposi#` tion and toreturn to` that position from the position to which they may have been"tilted by the operating mechanism.. e y Other desirable objects 1nconstruction and operation willbe apparent from the followingdescription and the accompanying drawings, and will be 'specificallypointed out in'tlie'appended claims. u l e. e In theaccompanyingdrawings illustratingthe preferred embodiment. `of my inven#tion: Figure 1 is a plan view ofmy furnace partly in elevation,

Fig.- 3 isa section',

various sizes and shapes by.l proper number of fuel-sup- Specicaton ofLetters Patent.

' Application sied August 2, 1912.

l has. a

Patented Nov. 2, 1915. serial No. 712,888.

partly in elevation, on line 3-3 of Fig. l; Fig. t is a section, partlyin eleva-tion, on line 4% of Fig. l; F ig. 5 is a section, on line 5-5ofFig.` 6, particularly showing a supporting-frame for thefuel-supporting members; and F ig. G is a section, on line 6*-6 of F ig.5.

The furnace grate comprises an outer frame A inclosing the gratestructure, which 1s made up ofany number of dumping seetions inlongitudinal or transverse arrangement, wherein eacdumping section maycontain any number of supporting frames B in vvarious arrangements withany number of fuel-supporting members C in each frame.

The grate shown comprises two diunping sections arranged end `to end,five supporting frames B side by side in each section and three fuelsupporting .members C in each frame. The supporting frames B arecompactly arranged and the fuel-supporting members C fastened thereinabutthose in the sidewise adjacent frames and overlap those in theendwise adjacent frames, so that aV continuous grate surface is providedthroughout the furnace. ing members are perforated with throughair-passages D which may aggregate any suitable percentage of the gratesurface to meet the various requirements of fuel, draft, etc. Thesupporting frames B are fastenedtogether in groups to form independent.dumping sections, and each dumping section The fuel-support"independently tilting that section to `dump the fuel residue therefromwithout'disturbing the other dumping section.

a The furnace frame A is made in any suitable way and has ajournalsurface for supporting the dumping section. The fuel-supportingframes B are identical, and are preferably cast in the form of abox-like `structure openat the top and bottom anddivided into icompartments -f by the` transverse strengthening ypartitions Each framepart Cr extending downwardly a place to one side of the center ofgravity of the frame for connection to the operating mechanism. Thefuel-supporting members C are identical Vand are preferably cast with a;fiatifuel surface and a corrugated shaped bottom for cool-ing purposes,while long and narrow passages D extend through the mem- Y may be tiltedto normal operation but do not interfere with u. wardly extending partsing frames,

d l I n a combination of a transverse rocking member- V.jacent membersin the endwise adjacent frames so as to form i members to replace thatit may be burned out or otherwise made bers for the entrance of the airto the coal or other combustible material on the fuelsupporting members.

The sides of the fuel-supporting members are made perpendicular so as toabut against the sidewise adjacent members to form a continuous gratesurface in a transverse direction, and the ends of the fuel-supportingmembers are made oblique so as to overlap the complementary oblique endsof the ad-` the same frame and in a continuous grate surface in thelongitudinal direction also. By this arrangement either of theindividual dumping sections the position shown in broken lines in Fig. 2without disturbing the other dumping section. Each fuel supportingmember has two legs I-I fitting against the partition F of the frame.`The holes in these legs ing the vfuel-supporting members in the frameB, but this rod may be disengaged from the frame and the fuel-supportingany member at any time unfit for efficient service. j

A transverse member J for each dumping section is fastened by pins K toall the down- G, from the support- L adapted to turn in bearings in theframe Arto allow tilting of the dumping section. Each transverse memberJ has downwardly extending fingers M pivotally connected by apin N tothe operating bar E which extends outside the furnace so that it can beoperated to tilt the respective grate sections and thereby ed thereon.

dump the fuel residue support- As previously noted the parts G arey soarrangedrelatively to the supporting frames B 'that j the unbalancedweight of the grate section always tends to hold the fuel-supportingmembers in their normal horizontal condition to form a continuous gratesurface and also tends to restore them to that position when they aietilted to dump the fuel residue. The abutinents O onjthe side frames Pserve to keep the fuel supporting membersin level position during thedumping movements previously described. c j

If desired, I may use cotter pins for fastening the fuel supportingmembers C in the frames B, as for example as shown on the right handside of Fig. 3 at R.

I-Iaving thus described my invention, what I claim is:V l

1j In a dumping grate for furnaces, the

having end trunnions adapted to turn in the furnace frames, means forrocking said member, a plurality of frames removably and is providedwith'journals Y end,wherein each section comprises a supported andarranged side by side on'said transverse rocking member and movabletherewith when saidmechanism is operated, anyone of said frames 'beingremovable from said transverse rocking member independently of theothers, and a plurality of fuel supporting elements fastened in eachframe but removable therefrom, said ele-`- ments completely coveringtheir respectivel frames andV thereby protecting them from directcontact with the lire, substantially as described. i

2. In a dumping grate for furnaces, the combination of a transverserocking member adaptedk to turn in the furnace frames, mechanism forswinging said transverse rocking member when` the grate is to be dumped,a plurality of framessecured to and mounted on said transverse rockingmember, said frames being positioned side by side and each beingremovable independently of the others, and a plurality of' perforatedfuel supporting elements fastened in each frame but removableVtherefrom, said elements `completely covering their respective frames toprotect them from l direct contact with the fire, the abutting ends ofsaid fuel supporting elements ov'er-` moved to dump the fuel residue,aplurality of frames arranged side by side .on each of said transverserocking. members, each of said frames beingremovable from said rockingmember independently of the others,

and a plurality of fuel` supporting elements in each frame, saidelements having overlapping edges in each frame to form a con! tinuousfuel supporting surface completely covering the frames and protectingthem from direct contact with the fire, the endlu Y elements of theframes" onVv one transverse rocking member overlapping the'end ele-`ments of the frames of the adjacent rockingmember to form affuelsupporting surface, part of which can be dumped while the i remainder isstationary, and any frame of which can be removed for renewal'oradjustment of its attached fuel'supporting elements without .removal ofadjacent frames.

izo

' 4. In a dumping grate forfurnaces, a plurality of dumping sectionsarranged end to plurality of elementsY abutting at their sides andwherein each element comprises a'supporting frame and a` plurality ofinde.-

pendently removable perforated fuel `supporting members with overlappedends fastened in the frame to form a continuous grate surfacein'transverse and 'longitudinal directions, said fuel supporting memberscompletely covering said frame and protecting it from direct contactWith the fire, a transverse member arranged to fasten the elements ofeach dumping section together and provided With end bearings adapted toturn in the furnace frame, and operating mechanism associated With eachtransverse member for tilting the fuel supporting members of therespective sections to dump the fuel residue therefrom Withoutdisturbing other sections.

5. In a dumping grate for furnaces, rality of dumping sections arrangedend to end, Wherein each section comprises a plurality of elementsabutting at their sides and wherein each element comprises a supportingframe' and a plurality of independently removable perforated fuelsupporting members fastened in the frame to a pluform a continuous gratesurface in trans verse and longitudinal directions, said fuel supportingmembers completely covering said frame and protecting it from directcontact With the fire, a transverse rocking member' 25 arranged tofasten the elements of each dumping section together and provided Withend bearings adapted to turn in the furnace frames, and operatingmechanism associated With each transverse member for tilting the fuelsupporting' members of the respective sections to dump the fuel residuetherefrom.

In testimony whereof I aiX my signature, in presence of tivo Witnesses.

GEC. H. THACHER, JR.

Witnesses:

THOMAS F. HOGAN, JEREMIAH H. HOURIHAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

